The symptoms you are telling now are more so anxiety
related and mild depressive symptoms.generalized fatiquability and decreased energy with disturbed sleep are the core symptoms of mild depression
However generalized fatiquability can also be due to decreased blood(%Hb ,ie anaemia
) or decreased ejection of blood from your heart.So you have to go to a physician/cardiologist to rule out this.
But definetly you have some anxiety/mild depressive symptoms for which you can see a Neuro-Psychiatrist
.I myself see almost 10-20 cases/day with these symptoms.
get well soon